Mining machine



K. DAVIS MINING MACHINE Nov. 3,v 1925.

Filed Sept. 1; 1917 7 Sheets-Sheet 1 Nov. 1925' n DAVIS IIlIIIQ IIACHINB Filed Sent. 17 7 Shuts-Shoot 2 Nov. 3, 1925.

' n DAVIS 'unmw ucnma Filod Sept. 11. 1917 '7 Shoots-Sheet 3 Nov. 3, 1925. 1,559,742

K. DAVIS IINING MACHINE 11 3 1,, 11, 1917 7 Sheets-Shoat 4 Nov. 3,1925. 1,559,742

K. DAVIS MINING MACHINE Filed Sent. 11. 1917 '7 Sheets-Sheet 5 /29 i z n [36 I w 5. +1, 150 A; mr

Ail v 20 \fi .424 r 12/ L E: "1 I W um/M044 Nov. a, 1925. 1,559,142

K. DAVIS IIIIING MACHINE may sml 1 17 '1 Sheets-Sheet 1 sum Znesses.

toomn Patented Nov. 3, 1925.

UNITED STATES PATENT OFFICE.

KENNETH DAVIS, or s'r- BENEDICT, PENNSYLVANIA, Ass'IeNoR TO REMBRANDT rEALE, on NEW YORK, N. Y.

MINING MACHINE.

Application filed September 11, 1917. Serial No. 190,731.

The invention relates to mining machines,

and in certain aspects thereof more especially to mining machines which complete the displacement or dislodgm ent of the coal or other mineral from the vein or scam; the invention including also cooperating means for loading the dislodged mineral into mine cars.

Further objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, such objects and advantages being attained through the instrumentalities and combinations pointed out in the appended claims.

The invention consists in the novel parts,

constructions, arrangement-s, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and constituting a part hereof, illus-' trate one embodiment of the invention, and together with the description serve to explain the principles thereof.

Of the drawings:

Figs. 1 and 2, taken together with Fig. 1 at the left and Fig. 2 at the right, constitute an elevation of a machine embodying the invention;

Figs. 3 and 4, taken together in like man ner, with Fig. 3 at the left and Fig. 4: at the right, constitute jointly a top plan corresponding to Figs. 1 and 2;

Fig. 3 is a view of a detail.

Fig. 5 is a vertical, transverse section taken on the line A-B of Figs. 1 and 2, the different parts of the section being taken on different vertical planes for the sake ofsimpli'city and clearness (the central part being through the pivot pin 72) Fig. 6 is an end elevation looking at Figs. 2 and 4 from the right;

Fig. 7 is a top plan (largely in outline only) of the machine and conveyor showing one position when loading coal into a mine car;

Fig. 8 is a side elevation corresponding to Fig. 7 but omitting the machine; v

Fig. 9 is a fragmentary sectional elevation of the drive between the motor'and the platform carrying the cutting ring; 1

Fig. 10 is a vertical section (developed on a plane) through the swing sections of the conveyor which are adjacent to the cutting ring;

parts shown in Fig. 10;

Fig. l2 is a fragmentary elevation of a portion of the conveyor and Fig. 13 is a transverse verticalsection on line C-D of Fig. 12;

Fig. 11 is a horizontalsection through'the Referring more particularly to the acconipanying drawings,lillustrating by way of example one embodiment of the invention,

means are provided for removing the coal, or other mineral by the direct operation of.

the machine (that is without blasting or other subsequent operations) and without the necessity of traveling the machine while removing a portion or section of coal from the vein. By my invention the mineral removing mechanism is rotated or otherwise operated to cut the mineral and the mechanism is at the same time automatically advanced through the mineral-as the cutting is effected to keep it in effective contact with the work, these mechanisms being simultaneously driven by the motive power, which In connection with the foregoing, means are provided whereby the mineral is 'sequentially and automatically conveyedaway holding it in stationary position, and in eachcase entirely independently of the tracks for conveyed to the mine cars, and without thenecessity of" laying tracks for this machine. Such means:

provide also for the free and facile handling of the machine in any direction over the mine bottom, as desired, the machine main taming its posltion without braces or stays of anykind whileremoving the mineral.

Other features and aspects of the inven tion will be set forthhereinafterfor will be obvious from the description of the mecha- 85 also returns the mechanism for a new cut.

nism, the same cooperating in the present embodiment with the various features and means already referred to.

Referring more particularly to the construction illustrated in the accompanying drawings, a rotating endless cutting device is supported upon and driven by the machine, the machine at the same time positively progressing the rotating cutting device through the coal, ore or other mineral, such progressing movement of the rotating cutting device being preferably arcuate and reciprocatory; the backward reciprocation positioning the cutting device for the next succeeding out.

As embodied, a ring 1 is provided in its front, flat edge with teeth 2, which teeth are preferably arranged'in various positions so as to cut adequate clearance spaceabout the ring as it advances through the mineral, the displacedmaterial passing on withinthe ring. As embodied, teeth '2 are set in alinement with the ring l to cut the mineral immediately ahead of the ring. These teeth are provided with bevel cutting faces formed on the head thereof, from which head extends a shank. This shank fits 'intoa recess in the flat or front edge of they ring ,1. The edge of the ring 1 is recessed orstepped, as shown at 3 in Figs. 1 and 3, thetooth-receivin'g recesses being formed in the leading or projecting portions of the steps in the edge of the ring. Fastening means for the respective teeth are provided, being preferably in the form of clamping .screws 4, located in the recessed portions of the edge of ring 1, and engaging the shanks of the teeth 2 to hold them in position, as shown in Fig. 1.

The 'teeth2 are set sidewise and slantingly and projecting outwardly from the ring' 1, so as to cut outwardly or on a greater.

diameter than the ring and thereby provide clearance on that side thereof. The cutting teeth 2 are inserted in a similar manner, but

less diameter than the ring, thereby provid-.

ing clearance in the cut on the inside of the ring. These teethare likewise held by, the clamping screwsl.

The ring 1 is-zr otatively mounted upon a support carried from the machine, and as shown, ring: 1 has fastened to its back or inner facea ring 6 (Fig. 3) which ring projects inwardlyinito a recess in a stationary ring'T, the ring 7 extending within and closely fitting-the ring 1. The ring 1 is shout dered at its forward end, in turn closely fitting the flat edge of ring 7 as shown at 8, Fig. 3, whereby the inner surfaces of the rings 1 and 7 are of the same diameter and present a smooth and uniform inner surface. Wear rings 9 and 10 are provided betweenthe surfaces of rings 1 and 7 if desired, same being replaceable and taking up the wear therebetween.

The stationary ring 7 is nested into a circular supporting frame 11, fitting thereabout, as shown in Fig. 3. The outer surand terminates in a flange 16, which flangeis enclosed within a vertical guideway 17, likewise formed on the machine frame. In the vertically-disposed guiding supports and connections just described, the ring 1 is movable up and down, that is, in its own plane or transversely to its own axis, to adapt the machine to veins or seams of different heights, or to operate upon different parts of the seam. Mechanism is provided for so raising and lowering the cutting ring which will be later described.

Means are provided for rotating the cutting ring 1 at any point of elevation or depression and while it is simultaneously automatically driven forward through the mineral by the motor, and in the embodied form thereof, there are provided in the external periphery of the ring 1 sprocket holes 20, with which intermesh teeth on a sprocket wheel 21. A reenforcing or backmg support 19 may be used to prevent'any possible springing of the cutting ring away from its driving sprocket. The sprocket wheel 21 is mounted 'on a stub shaft 23 journaled in a bearing 24: mounted upon the slidable frame 12,.which supports the cutting ring. Sprocket wheel 21 has driving connections suitable for themovement of theframe 12, and as embodied, a gear wheel The frame 25 is fixed. on the shaft 23 of the sprocket wheel. Meshing with the gear wheel-25 is a floating idler pinion 26, which pinion is carried between and journaled in two parallel frames 27 and 28. The frames 27 and 28 at one end are pivoted on the shaft 23. At the other end frames 27 and 28 are pivotally connected to similar frames 29 and 30, by reason of all four frames serving as ournals for asecond idler pinion 31,

which meshes with the pinion 26 and also a gear wheel 32. Gear wheel 32 is'mounted loosely on a driven shaft 33, arranged transversely of and journaled upon the machine (Figs. 1 and 3). The frames-29 and 30 are supported at their other end upon the shaft 33. The gearing just described serves as a drive for the cutting ring 1, through sprocket wheel 21, notwithstanding the vertical changes in the position of the cutting ring. 7

Fixed to the gear 32 and loose therewith on shaft 33 is a clutch member 35. A cooperating clutch member 36 is fast on shaft 33, the operation of the clutch 35, 36 controlling the rotation of the cutting ring 1. Shaft 33 is driven in a suitable manner, and as embodied, the shaft is provided at its other end (Fig. 3) with a gear 37. Meshing with the gear 37 is an idler 38, which in turn is driven by a pinion 39, on the shaft of a motor within the casing 40. This clutch and the others shown in the machine, will be operated by hand levers, or other suitable devices, same being omitted from the drawings for the sake of clearness.

Referringto the means for raising and lowering the cutting ring, previously referred to, it will be recalled that the frame 12, by means of the guiding flanges 14 and 16 may move up and down vertically in the guides 15 and 17 on the machine frame. A vertically disposed shaft 59 is supported in the lower part of the frame 12 (Fig. 1)

so as to be rotatable while being held longitudinally in respect to the frame. Said mounting as embodied compries a collared hub 51 at the lower end of the shaft 50, the collared hubv fitting into the frame 12. The shaft 50 is screw threaded, as shown at 52 and carries an internally screwthreaded beveled gear 53. Beveled gear 53 is rotatably mounted, as by a collared hub 5 1, ournaled on the machine frame. Meshing with the gear 53 is a beveled gear 55, which gear is mounted on a horizontally disposed shaft 56. The shaft 56 is journalled in a bearing 57 on the machine frame. At the opposite end thereof, shaft 56 carries a beveled gear 58. Meshing with the gear 58 are two beveled gears 59 and 60, which are loose on shaft 33, and are provided, respectively, with clutch members 61 and 62. Between the clutch members 61 and 62 is a common clutch member 63 rotating with, but slidable along, shaft/33. Clutch member is held in a central or disengaging position, or can be thrown into engagement with the clutch member 61 or with clutch member 62, to rotate shaft 56 in either direction as desired. When shaft 56 is rotated in one direction or the other, it rotates beveled gear 53 in the corresponding direction. By reason of gear 53 being held in fixed position upon the machine frame, and being in screw-threaded engagement with shaft 50, and the mounting of the shaft upon the frame 12, the cutting ring 1 is raised or lowered, as desired, by the operation of the clutch member- 63, as just described.

Means are provided for controlling the limit of elevation and depression of the cutting ring and for preventing jamming of without jamming the mechanism.

Means are provided for driving the cutting ring 1 forward while it is being rotated, and preferably for driving thefiring in an arcuate path about a center. In the embodied form of such means, the frame.

of the machine which supports the mechanism already described is fixed to a base- I plate 70. The plate 70 is supported upon a bed 71 by means of a pivot or post 72. A retaining cap 7 3, of greater diameter than thepost 72, is fixed to the top of the post in a suitable manner, as by bolts 74, and serves to hold the base plate 70 and its supported mechanism in position upon the bed 71, while permitting the mechanism to r0,- tate aboutthe post 7 In the embodied form of means for driving the cutting ring 1 in its forward arcuate path (it in the meantime being rotated on its supporting frame by the mechanism al-' ready described), a yielding action is pro vided, as the cutting ring may encounter hard places in the mineral which might break or otherwise injure the machine if the drive were rigid. Such embodied form comprises a pinion 76 fixed on the opposite end of the motor shaft, from the pinion 39. Pinion 76 meshes witha gear 77 carried on a stub shaft 78. Fixedalso on shaft 78 is a bevel gear 79, and meshing therewith is a bevel gear 80. The gear 89 is fixed upon a vertically disposed shaft 81, journaled in supporting brackets 82, 83 and 841-, mounted upon the motor casing and upon the machine frame. is an arm 88, the outer end of the arm carrying a stub shaft 89. Loose on shaft 89 is a double pinion 90, 91. Meshing with the pinion 99 is a gear wheel 86, and fixed to, or integral therewith, is a sleeve 86. Sleeve 86 and gear 86 are loose on shaft 81. Fixed to sleeve 86 is a bevel gear 95, which meshes with a bevel gear 96, loosely mounted upon a shaft 97 arranged transversely of the ma chine frame (Figs. 3 and 5). Fixed also to sleeve 86 isa bevel gear 98, which meshes with a bevel gear 99, the latter being likewise loosely mounted on shaft 97.

Bevel gear 96 is provided with a clutch member 100, and bevel gear 99 is provided with a clutch member 101. Cooperating with the clutch members 100 and 101 is a Fixed on shaft'81 therebetween and is mounted upon the shaft 97 to rotate therewith but being slidable therealong to engage either clutch member 100 or 101. The shaft 97 is journaled in bearings 104 and 105 mounted upon the bed plate 70, which bed plate at this end thereof is of arcuate form and concentric with the post 72. Fixed to the shaft 97 is a worm gear 106, which intermeshes with an arcuate series of gear teeth 107 formed on a plate 108 bolted to the bed 71.

Pinion 91 meshes with a gear wheel 87, which wheel is fixed to a band-controlled brake wheel 92, both being loose on sleeve 86 -The periphery 93 of wheel 92 will have a band and lever brake applied thereto in the usual manner, same being omitted for the sake of clearness. Gear 98 will be used to progress the ring along its path during the cutting of the mineral and gear 95 during the idle return movement to position for a new bite on the vein. When there is no pressure on brake wheel 92, and gear 86 offers resistance, pinion 91, will rotate gear 87 idly. When braking pressure is applied to wheel 92 and gear 87 is retarded or stopped, pinion 90 will rotate gear 86 and swing platform about its pivot 72 in the direction determined by clutch member 102. The pressure on brake wheel 92 will be so regulated as to produce the above action, and yet allow slippage or yielding whenever the cutting ring strikes an unusually hard spot in the vein.

The machine is adapted to remain sta tionary upon the mine fioor, without tracks or braces or other holding or directing appliances, and is also adapted to travel about, forwardly or backwardly or angularly, or

, otherwise, upon the mine floor independently of any track. The progressing means for the machine is arranged substantially parallel or in general alinement with the cutting movement of the cutting ring so that the machine may travel intermittently across the exposed face of the vein, and at each pause the cutting ring may make one reciprocation and remove a bite from the face of the vein.

Referring more particularly to the embodied construction of the means for supporting and moving the machine, there is provided a general carriage 110 upon which the entire machine is supported and carried.

.The carriage 110 comprises side beams 111 and 112, and the carriage is supported at either end by a caterpillar tread, the treads in the preferred form being arranged trans versely to the length of the machine. As

embodied, the forward tread comprises a series of iron plates 113 provided with projecting studs orpoints 114. The plates 113 are arranged transversely on the alternate links of an endless sprocket chain 115. The sprocket'ch'ain115 of the forward tread, which'tread is located adjacent to and preferably just forward of the post- 72, is carried over an idler sprocket wheel 116 and over a driven sprocket wheel 117. The

sprocketwheel 117 is fixed on a shaft 118, extending backwardly along the carriage 110 (Figs. 3 and 4) to the rear caterpillar tread which is shown in Figs. 2, 4 and 6. The shaft 118 is journaled in the machine frame, and at its rear end is provided with a worm gear 119, which meshes with a worm 120. Worm 120 is fixed on a shaft 121 mounted at the rear of the machine (Figs. 4 and 6).

Means are provided by the invention for driving the shaft 118, and therefrom the forward caterpillar tread 117, in either direction, either uniformly with, or independently of, the rear caterpillar tread, later to be described. In the embodied form of such means, there are loose on the shaft 121 two mitre gears 122 and 123, which gears are in mesh with a mitre gear 125. Between the gears 122 and 123, on shaft 121, rotatable therewith but slidable therealong is a clutch member 124, adapted to engage either with a clutch member formed on the hub of gear 122 or with a clutch member formed on the hub of gear 123, to reverse the direction of drive of shafts 121 and 118 from motor 131, and thereby to drive the forward caterpillar tread in either direction.

drives the rear caterpillar tread, and clutch 132, 133 disconnects the motor from this also.

The rear caterpillar tread is preferably of similar construction, and as shown comprises metal plates 140, provided with sharp points 141, the nlates 140 being carried upon the sprocket chain 142. Sprocket chain 142 passes over an idle sprocket wheel 143, mounted in an extension of the machine frame, and passes also over a driven sprocket wheel 144. Sprocket wheel 144 is fixed onv a shaft 145, and fixed also. on shaft 145 is a worm gear 146, with which intermeshes a worm 147. Worm 147 is fixed on a shaft 148, mounted at the rear of the machine, and preferably in alinement with the shaft 121. Mounted loosely on shaft148 are two mitre gears 149 and 150 in mesh with a driving mitre gear 151. slidable therealong but rotatable therewith, is a clutch member 139, adapted to pass into Mounted on shaft 148, and.

chine frame.

engagement either with a clutch member formed on the hub of gear 150 or with a clutch member formed on the hub of gear 151, to drive shafts 1418 and 1 15, and therewith the rear caterpillar tread in either direction. The actuating levers for clutches 124 and 139 are omitted for the sake of clearness. These may be, like other omitted clutch-actuating levers, of any usual or convenient form. Gear 151 is fixed on a shaft 154;, to which shaft is fixed a worm gear 155. Vorm gear 155 meshes with the worm 129 already described, that, also drives worm gear 128 and shafts 121 and 118.

Through the clutch 182, 133 the entire drive for the caterpillar tread may be thrown out and the machine remain at rest. Either gear of the pair of driving gears 1.22, 128 and 149, 150 by their own clutches may be thrown into mesh with their respective driven shafts, or each of said pairs of gears may be thrown into a neutral position. Thus either caterpillar tread may be operated alone in either direction, or simulta neously with the other in either direction, or the treads may be operated in opposite directions at the same time to progress,

maneuver and position the machine.

Means are provided for tilting the cutting ring to travel and cut at a variable angle upwardly or downwardly, and in the embodied form of such means, the bed 71 is made rotatable upon the carriage 110, thereby tilting the entire mechanism carried by the bed. in such embodied form, the bed 71 is formed with its lower portion 160 of semi-cylindrical shape, such portion having formed on the exterior thereof an arcuate series of teeth 161. Meshing with the teeth 161 is a worm .162, fixed on a shaft 163, which shaft is join-nailed in lugs 16 1 and 165 on the ma in any suitable manner, and in the embodied form it is provided with a squared end 166, adapted to take a crank or bar so that the mechanism may be tilted in either direction by hand. Thus, the cutting ring as it moves forward through the vein move in the general plane of the vein, or inclined upwardly or downwardly with respect thereto.

Means are provided for conveying the mineral backwardly from the cutting ring, and in accordance with certain aspects of the invention, cooperating therewith are means for conveying the dislodged mineral away and loading it upon the mine cars.

As embodied, there is fixed to the supporting ring 11 a cylindrical, arcuate pipe 170 which communicates with a similar pipe or semi-cylindrical member 171, the latter encircling the former so that they will telescope upon the application of end pressure. Located within and at the rear end of the section 171 are a-series of teeth or blades 172, carried upon pivotal mountings 17 3,

The shaft 163 may be rotated the blades 172 being positioned to freely permit the passage of'the broken and dis lodged mineral in one direction, but preventing its passage in the opposite direction.

Mounted in the upper, rear portion of the section '171, by pivotal supports 174 are a series of arms 175, carrying downwardly extending arms 176, provided with one or more arcuate blades 177. The purpose of the blades 172 and 177 is to convey the mineral rearwardly away'from the cutting ring during the relative movement of the parts 170 and 171. As the telescoping action occurs, the mineral in the section 171 would tend to move into the section 170, but encountering blades 172, thesev are raised upwardly a short distance, and hold the min eral against moving forwardly into section 170, and thereby it is pushed out of or ejected from the rear end of section 171.

During the movements just described, the blades 177 have been pushed forward over the top of the coal in section 170, the arms 176 yielding during such movement. When the parts move in the opposite direction, the blades 177 engage with the mineral and gradually sinkdeeper and deeper into the mass of disengaged mineral in the section 17 0, and as the section 171 moves rearwardly, the coal from section 170 is drawn into the section 171. 'As the cutting ring moves forward to the work, the section 170 moves out from within the section 171.and the coal from the former is conveyed into the latter, leaving the section 170 vacant to receive the mineral which is to be cut from the vein by the cutting ring. As the cutting ring swings back for a new cut, section 170 passes within the section 171, and the mineral within, the latter is pushed out upon the conveyor by the blades 172. I

In conjunction with the foregoing, means are provided for loading the dislodged mineral into mine cars, and in accordance with certain features of the invention, the conveying and loading means are adapted to con.-

ivey the mineral from the machine, whilethe latter is traveling or positioned to and fro across the exposed face of the vein, to a car standing upon a track. In Figs. 7 and 8 is shown (more or less diagrammatically) the embodied form of such means, an enlarged, fragmentary View of the conveyor being shown in Fig. 12. v i

As embodied, means are provided for raising and lowering the rear end of the conveyor member 171 in conformity with the raising and lowering of the cutting ring. As embodied near the rear end of the section 171 is outwardly projecting bracket 180, having formed on the external face thereof a vertically disposed, undercut guiding member 181. This member slides" vertically in a guide 182 formed in a bracket or frame ember 1 3 extending outwardly from the :frame... of. .the machine.

Supported on the "bracket 183-is agshaft 184 provided with a handle 185. The shaft 18 1 is in screwvthreaded engagement with the vertically slidable guide piece 181, and by turning the hand wheel 185 the guide piece 181 and the conveyor 171 are'raised ,and lowered as desired.

.Cooperating with the section 171 is a receiving conveyor 186. The conveyor sec- ,tion 1-71 is provided with plates 187 and 188 zit-either side, .shaped to directeand forward -;the mineral to the conveyor 186. The con- .veyor 186 may be of endless belt form, run- .ning over rollers 190 and 191. The roller 191 is drivenin suitable .manner -and as .shown s driven by sprocket wheel 192 fixed on the roller shaft. Running over the .sprocket wheel 192 is. a sprocket chain 193 which alsoruns overa sprocket gear 19% on the shaft of .a driving motor 195. The

motor 195 is mounted upon the frame 196 of the conveyor section;

The mineral is discharged from the conveyor section186 to a conveyor 197, which conveyor has swiveled mountings at the end thereof to permit the mining machine to travel transversely or directly across the direction of the mine car track. As embodied. the conveyor 197 is likewise of endless belt form, andruns over rollers 198. ()ne of roller 191 is mounted in .a frame 205,

swiveled .upon a frame 2.06,..with-in which latter frame is journaled. the driving roller 198. The various conveyors may be supported on wheels or may be carried as desired on the main machine frame. A suitable apron or shield 207 directs the coal from the conveyor 186 to the conveyor 197.

The conveyors are preferably and usually inclined upwardly to deliver the dislodged mineral over the top of the mine car,

The conveyor 197 at its rear or discharge ,end is pivotally carried or supported upon a frame ,or carriage 210, which preferably runs upon wheels upon the mine track (Figs. -7 and 8). The conveyor 197 is providedat either side with guiding plates 211, 212 to convey the broken mineral, forwardly along the conveyor. The carriage 210 is preferably supported upon wheels or trucks 213 and 21 1, resting upon the mine track 215. The rear or discharge end of the con yeyor l97.isgpreferably provided with a carriage 210 and the car 217 may be moved along the track 215, dependent uponchanges in the position of the machine, as regards its approach to and recession from the track 215.

Fronr all the foregoing, it will beunder-- stood that a machine has been provided embodying the features of the invention and the advantages herein described and indicated, together wit-h other advantages which will be obvious to those skilled in the art, or which may be learned by practice with the invention. It will be further understood that the invention is not limited to the particular constructions herein shown andv described, nor to any particular details of construction, but that changes: may be made therefrom without departing from the principles of the invention and without sacriticing its chief advantages.

lVhat I claim. as my invention is 1. A mining machine including in combination a rotating tubular cutter, power operated means for advancing the rotating cutter to cut the mineral from the vein, and power operated means for reversing the ad vancing means to return the cutter for. a new bite on the vein.

2. A mining machine including in combination a rotating tubular cutter, power oporated means for angular-1y advancing'the rotating cutter to cut the mineral from the vein, and power operated means for reversing the advancing means to return the cutter for a new bite on the vein.

3. A mining machine including in combination a rotating tubular cutter, power operated means for yieldingly advancing the rotating cutter to out the mineral from the vein, and power operated means for reversing the advancing means to return the cutter for a new bite on the vein.

4. A mining machine including in combination a rotating tubular cutter and an ec' centric pivotal mounting therefor, power operated means for swinging said cutter about its mounting to cut the mineral from the vein, and power operated means for reversing the advancing means to return the cutter for a new bite on the vein.

5. A mining machine including in combination a rotating tubular cutter and an eccentric pivotal mounting therefor. a motor and connections for swinging the cutter about its mounting to cut the mineral from the vein, and a reversing device in said: connections to return the. cutter for a bite on the vein.

6. A mining machine including in combination a ring cutter for cutting a solid core of mineral, and means for progressing the cutter through the mineral to remove it from the vein and for retrogressing the cutter for a new bite on the vein, said progressing and retrogressing means comprising a motor and connections therefrom to the cutter, including a reversing device.

7. A mining machine including in combination a rigid rotating ring for removing a core of mineral from the vein, an eccentric, pivotal mounting therefor, a motor and connections therefrom for swinging the ring about its pivotal mounting, said connections including a direction reversing de- Vice.

8[ A mining machine including in combination a rigid rotating ring for removing a core of mineral from the vein, an eccentric, pivotal mounting therefor, a motor and yieldable connections therefrom for swinging the ring in either direction about its pivotal mounting.

9. A mining machine including in combination a rigid rotating ring for removing a. core of mineral from the vein, means for raising and lowering the ring relatively to the vein, and a motor for rotating the ring and for operating said raising and lowering means.

10'. A mining machine including in combination a rigid rotating ring for removing a core of mineral from the vein, means for raising and lowering the ring relatively to the vein, and a motor for rotating the ring and for operating said raising and lowering means, connections from the motor to the ring including a clutch, and connections from the motor to the raising and lowering means including a reversing clutch.

11. A mining machine including in combination a rigid rotating ring for removinga core of mineral from the vein, means for raising and lowering the ring relatively to the vein, and a motor for rotating the ring, and a flexible gear train between the motor and ring.

12. A mining machine including in combination a rigid rotating ring for removing a core of mineral from the vein, means for raising and lowering the ring relatively to the vein, and a motor for rotating the ring, and a flexible gear train and a clutch between the motor and ring.

13. A mining machine including in combination a support and vertical guides thereon, a cutting ring for out ing out a core of mineral, a supporting fra. e therefor slidable in said guides, and means'for rotating the ring.

14:. A mining machine including in combination a support and vertical guides thereon, av cutting ring for cutting out a core of mineral, a supporting frame therefor slidable in said guides, a motor on said support, and a flexibl train of gearing between the motor and ring. I

' 1.5. A mining machine including in combination a support and vertical guides there on, a cutting ring for cutting out a core of mineral, a supporting frame therefor slidable in said guides, a motor on the support, and connections therefrom to the supporting ring for raising and lowering the ring.

16. A-mining machine including in com bination a support and vertical guides thereon, a cutting ring for cutting out a core of mineral, a supporting frame therefor slidable in said guides, a motor on the support, and connections therefrom to the supporting ring for raising and lowering the ring and a flexible train of gearing between the motor and ring for rotating the ring.

17. A mining machine including in com bination a carriage, a platform pivotally mounted thereon, acutting ring carried by said platform, a motor on said platform and connections between the motor and carriage for swinging the platform and ring about the pivot.

18. A mining machine including in combination a carriage, a platform pivotally mounted thereon, a cutting ring carried by said platfornna motor on said platform and connections between the motor and carriage for swinging the platform and ring about. the pivot, said connections including a reversing clutch. p

19. A mining machine including in com-- bination a carriage, a platform pivotally mounted thereon, a cutting ring carried by said platform. a motor on said platform and connections, includ ng a yielding driving device, between the motor and carriage for swinging the platform and ring about the pivot.

20. A mining machine including incombinat on a carriage, a platform pivotally mounted thereon, cutting ring for cutting out a core of-mineral carried by said plat form, a motor on said platform and connections between the motor and carriage for swinging the platform and ring about the pivot and connections between the motor and r ng for rotating the ring.

21. A mining machine including in combination a carriage, a platform pivotally mounted thereon, a cutting ring carried by, but vertically movable relatively to, said platform, a motor on said platform, and connections between the motor and ring for raising and lowering the ring relatively to the vein. i

A mining machine including in combination a carriage, a platform pivotally mounted thereon, a cutting ring carried by, bit vertically movable relatively to, said platform, a motor on said platform, and connections between the motor and ring. for

raising and lowering the ring relatively to the vein, and connections between the motor and carriage for swinging the platform and ring about the pivotal mounting.

23. A mining machine including in combination a carriage, a rotatable cutting ring mounted thereon for cutting out a solid core of mineral, means for advancing the ring relatively to the carriage, a motor on the carriage, and means driven by the motor for steering and advancing the carriage over the mine floor.

24. A mining machine including in combination a carriage, a rotatable cutting ring mounted thereon for cutting out a solid core of mineral, means for advancing the ring relatively to the carriage, a motor on the carriage, and carriage traveling and steering means comprising a plurality of carriage supporting and progressing members resting on the mine bottom and driven by the motor.

25. A mining machine including in combination a carriage, a rotatable cutting ring -mounted thereon, means for advancing the ring relatively to the carriage, a motor on the carriage, and carriage traveling means comprising a plurality of carriage support ingand progressing members resting on the mine bottom and driven independently as to direction to impart rectilinear or angular movement to the carriage by the motor.

'26. A mining machine including in combination a carriage, a rotatable cutting ring mounted thereon, power operated means for angularly advancing the ring relatively to the carriage, a motor on the carriage, and 'means driven by the motor for advancing the carriage over the mine floor.

27. A mining machine including in combination a carriage, a rotatable cutting ring mounted thereon, power operated means for :angularly advancing the ring relatively to the carriage, a motor on the carriage, and carriage traveling means comprising a plurality of endless traction treads resting on the mine bottom and driven independently as to direction to impart rectilinear or angular movement to the carriage.

28. A mining machine including in combination a carriage, a rotatable cutting ring mounted thereon, power operated means for advancing the ring relatively to the carriage, a motor on the carriage, and carriage traveling means comprising a plurality of carriage supporting and progressing members resting on the mine bottom, driving connections therefrom to'the motor including a clutch for each of the carriage supporting and progressing members.

29. A mining machine including in combination a carriage, a rotatable cut-ting ring mounted thereon, power operated means for advancing the relatively to the carriage, a motor on the carriage, and carriage "nssavae traveling meansv comprising a plurality of endless tractions treads resting on-the mine bottom, driving connections therefrom to the motor including a reversible clutch for each of the carriage supporting and pro gressing members.

30. A. mining machine including in combination a carriage, aplatform pivotally mounted thereon, a cutting ring carried by said platform, a motor on said platform and connections between the motor and carriage for swinging the platform and ring about the pivot, and carriage progressing means comprising a plurality of separately movable members resting on the mine bottom.

A mining machine including in com bination acarriage, a platform pivotally mounted thereon, a cutting ring carried by said platform, a motor on said platform and connections between the motor and carriage for swinging the platform and ring about the pivot, and carriage progressing means comprisin a plurality of separately movable members resting on the mine bottom,

said carriage progressing members being movable independently as to direction to impart either rectilinear or angular movement to t is carriage.

32. A mining machine including in combination a carriage, a platform, pivotally mounted thereon, a cutting ring carried by said platform, means for swinging the platform and ring about the pivot, and carriage progressing means comprising aplurality of separately movable members resting on' the mine bottom.

33. A mining machine including in combination a carriage, a platform pivotally mounted thereon, acutting ring carried by said platform, means for swinging the plat form and ring about the pivot, and carriage progressing means comprising endless traction treads resting on the mine bottom, said endless traction treads being movable independently as to direction to impart either rectilinear or angular movement to'the carriage.

34:- A mining machine including in combination a carriage, a platform pivotally mounted thereon, a cutting ring carried by said platform, a motor on said platform and connections between the motor and carriage for swinging the platform and ring about the pivot, a motor on said carriage, and'a pair of caterpillar treads driven thereby.

35. A mining machine including in combination a carriage, a platform pivotally mounted thereon, a cutting ring carried by said platform, a motor'on said platform and connections between the motor and carriage for swinging the platform and ing about the pivot, a motor on said carriage, and a pair of caterpillar treads driven thereby and a reversible clutch between each tread and the motor.

port whereon the conveyor is angularly, mounted, said support being ad acent to a receiving car on the mine track.

37. A mining machine adapted to travel transversely across the exposed face of the vein including in combination a rotating ring cutter for cutting out a core of mineral, a conveyor for conveying the dislodged mineral away from the machine, and a support whereon the conveyor is angularly mounted, said support being mounted on the mine track adjacent toa receiving car.

'38. A minin machine including in combination a cutting device advancing through the vein to dislodge the mineral, a receptacle receiving the dislodged mineral, said receptacle comprising two cooperating tele- "scoping sections, and a conveyor carrying the mineral from the receptacle to a receiving car.

39. A mining machine including in combination a cutting device advancing through the vein toidislodge the mineral, a receptacle receiving the dislodged mineral, said receptacle comprising two cooperating telescoping sections, devices effecting a forward movement of the mineral from one section to another, and a conveyor carrying the mineral from the receptacle to a receiving car.

40. A machine of the class specified comprising a tubular receiver provided with an inlet at one end and a movable cutter at said open end of the receiver and through which the cut material also passes, and a support for the receiver having a swinging movement in the arc of a circle and also adjus able vertically, the receiver having an outer curved side corresponding in degree ofcurvature to the are through which the receiver and support have swinging movement.

41. A machine of the class specified comprising a tubular receiver provided with an.

inlet at one end and a movable cutter and a frame therefor at said inletend of.the receiver and through which the cut material also passes, and a support for the receiver having a swinging movement in the arc of a circle and also adjustable vertically, the receiver having an outer curved side corresponding in degree of curvature to the are through which the receiver and support have swinging movement and the cutter frame also having an outer curved surface which is a continuation of the same arc as the outer side of the receiver.

42-. A machine of the class specified comprising a tubular receiver having cutting means operating therewith, and conveying means also associated with the receiver, the

cut material collecting in bulk charges in the 7 receiver and the successive charges of bulk material enteringthe receiver forcing out the preceding charges therefrom to the conveying means. I

43. A machine of the class specifiedhoifi" prising a tubular receiver having an. inlet opening at one end and a cutting means mo v. able, aroundthe said end, the cut material being free to pass through the cuttingmeans into the receiver, a support for said receiver, the said support being operable to swing in the arc of a circle and also adjustable to di'fferent elevations, and mechanism independently operable for controlling. the swinging movement of the support and receiver and the variation in elevation-thereof.

44. A machine ofthe classspecified having a tubular receiver with a cutting component at one end forming a part thereof. the receiver and its cutting component being mounted toswing as a unit in an arcuate path and simultaneously operable forcutting and gathering up andfcarrying, materialfrom theface of a vein or ledge in the direction of movement of-the said receiver, and cutting, component, the cut material being passed directly intoand carried by the receiver during the cutting operation, the discharge of the cut material from the receiver being effected by the successive charges of material passed thereinto.

45. A coal cutting machine comprising a swinging enclosure which directly receives and carries the coal asit is cut, the enclosure having an open cutting component rotatably mounted on one end and forming a part' thereof to cut the coal in columi'is from the face of a vein and effect an immediate passing of each. column into the enclosure, the enclosure and its cutting component holding and carrying the columnar charge clear of; the vein. i

46. A mining machine includingin com-lob nation a frame, a tubular cutter pivoted to the frame, for cutting out a core'of mineral, and power operated means for swinging the", cutter about its pivot in one direction for. progressing the cutter through the vein. and for swinging itin the reverse direction for a new bite on the vein.

47. A mining machine including in combination a frame, a tubular cutter ring, pivoted to the frame, for cutting out a core of mineral, a motor carried on the frame, connections from the motor for rotating the cutting ring, and reversible connections from the motor for swinging the cutter above its pivot.

4-8. A mining machine including in combination a machine frame, a ring cutter for cutting out a core of mineral, a frame for the cutter pivoted to the machine frame,

-means for swinging the cutter frame about its pivot, endless traction treads alongside frame, power operated means for swinging the cutter and cutter frame about its pivot, endless tractiontreads alongside the machine, and meansfor driving the traction treads independently or together.

50. A mining machine including in combination a machine frame, a ring cutter for cutting out a core of mineral, a frame for the cutter movable up and down to successively parallel operative positions, endless traction treads' alongside the machine frame, and means for drivlng the treads independently or together.

5 1. A mining machine including in combination a machine frame, a ring cutter for cutting out a core of mineral, a frame for the cutter pivoted to the machine frame and movable up and down thereon to successively parallel operative positions, endless traction treads alongside the machine frame, and means for driving the treads independently or together.

52. A mining machine including in combination a machine frame, a ring cutter for cutting out a core of mineral, a frame for the cutter, pivoted to the machine frame and movable up and down thereon to successively parallel operative positions, power operated means for swinging the cutter frame about its pivot, endless traction treads alongside the machine frame, and means for driving the treads independently or together.

53. A mining machine including in combination a frame, a ring cutter for cutting out a coreof mineral, means for moving the cutter up and down to successively parallel operating positions, means for rotating the cutter, and means for forcing the cutter into the vein.

54. A mining machine including in combination a machine frame, a ring cutter for cutting out a core of mineral, a frame for the cutter pivoted tothe machine frame, power operated means for swinging the cutter frame about its pivot, and means for moving the cutter frame up and down to position the cutter in successively parallel operating positions.

A mining machine including in combination a frame, a ring cutter for cutting out a core of mineral, means for variably positioning the cutter at different levels such that the successive positions of the elements of the cutter are respectively parallel, a motor, and driving connections from the motor for rotating the cutter, and for mov ing the cutter to different operating levels.

56. A mining machine including in combination a machine frame, a ring cutter for cutting out a core of mineral, a frame for the cutter pivoted to the machine frame and novab'le up and down to successively parallel operating positions, a motor, connections from the motor for moving the cutter frame about its pivot, and connections from the motor'fo moving the cutter frame up and down.

5'Z.- A; mining machine including in combination a machine frame, a'ring cutter for cutting out a core of mineral, a. frame for the cutter pivoted to the machine frame and movable up and down to successively parallel operating positions, a motor, conn-ections from the motor for driving the cutter, for moving the cutter frame about its pivot, and for raising and lowering the cutter frame,

58. A mining machine including in combination a machine frame, a ring cutter for taking out a core of mineral, frame for the cutter movable about vertical and hori- Zontal axes, andalso movable up and doWn to successively parallel operative positions,

and means for driving the cutter.

59. A mining machine including in combination a machine frame, a ring cutter for taking out a core of mineral, a frame for the cutter movable about vertical and horizontal axes and also movable up and down to slice- KENNETH DAVIS. 

